Yarn-waxing device



T. CUNNINGHAM.

YARN WAXING DEVICE.

APPLICATlON FILED NOV,14, 1919.

1 350,007. Patented Aug. 17, 19%

WITNESSES: INVENTOR:

6% Tkmnas UlZ HJZZWMflZ j a/Wmx N 2:: BY 0 v UNITED STATES PATENT OFFICE.

THOMAS CUNNINGHAM, OF PHILADELPHIA, PENNSYLVANIA.

YARN-WAXING DEVICE.

Specification of Letters Patent.

Patented Aug. 17, 1920.

Application filed November 14, 1919. Serial No. 337,931.

, vented certain new and useful Im rovements in Yarn-Waxing Devices, w ereof the following is a specification, reference being had to the acbompanying drawings.

The invention relates to yarn waxing devices such as may be employed in connection with winding or spooling machines, and wherebythe yarn is lightly-coated, and at the same time smoothed so as to be properly conditioned, and thus rendered more readily workable in various subsequent processes of textile manufacture.

The invention relates more particularly to that class of such waxing devices in which a cake of the waxing material is rotated under movement induced by the linear travel of the yarn during winding, and the coating efi'ected under pressure aifordecl by the weight of the cake only.

The invention is directed to a device of the above type in which the axis of rotation, of the wax cake, is set at an inclination to eifect a modification of the pressure induced by gravitation as above noted, so that light gage yarns may be readily coated without any danger of fracture under the drawing stress.

The invention also comprehends a novel pivot bearing by which the wax cake is supported for rotation in such manner as to ofier the least possible resistance to the pull of the yarn.

The invention is further directed to a rotatable holder for the wax cake, which holder is provided with means directly engageable by the yarn to eflect positive rotation of the holder and its charge, as a consequence of which, the yarn is slightly twisted and thereby smoothed, and at the same time, evenly coated with wax.

Further novelty is vested in an associated threading means whereby the yarn is automatically guided into proper operative relation to the waxing elements when starting the winding operation, or ,in efiecting its resumption after fracture of the yarn or exhaustion of the supply.

The organization whereby I attain the above advantages will be more readily understood from the detailed description which follows. i

t In the accompan ing drawings, Figure I, s an illustration 0 my improved yarn waxing device shown in association with certaln essentlal elements of a winding machine, portions of the device being sectioned so as to more clearly illustrate the structural details thereof.

Fig. II, is a plan view of the device as vlewed in the direction of the angle of its inclination.

Fig. III, is a perspective view of one of the associated elements of the structure which is functional in automatically threading the yarn into proper operative relation with the waxing elements;

Fig. IV, is a fragmentary, detail, sectional elevation, as viewed in the direction of the arrows IV-IV in Fig. II.

Referring first to Fig. I, the numeral 1, represents a portion of a winding machine to which the supporting bracket 2, of the Waxing device may be conveniently attached, as by bolting or otherwise. The bracket 2, has an integral boss 3, within which is adjustably set, (by means of a screw 6), a mounting stem 5, for a rotatable wax holder comprising a disk 12, and an attached, capped, tubular, axial extension 10. This extension is bushed by a comparatively light centrally bored sleeve 9, preferably of wood, closed at its inner end by a screw plug 8, which is spotted or countersunk, as shown in Fig. I, to receive the pointed end 7, of the stem 5. In the operation of the device, an annular wax cake 11, is placed upon the holder, and the yarn, represented at Y, drawn over the top of the disk 12, and beneath cake 11. The necessary working pressure is maintained by gravitation, and this in turn modified by virtue of the inclined mounting of the structure, so that only a slight strain is placed upon the yarn. By this arrangement, I am enabled to wax yarns of comparatively light gage without danger of rupture under the drawing strain.

In order to effect the positive rotation of the wax holder, the axial extension 10, at the point of-its juncture with the supporting disk 12, is formed with a knurled peripheral handle, (see Fig. IV) which is directly engaged by the yarn in the course of its linear travel. By this action, not only is a uniform film of the wax applied to the yarn by the slight attendant twisting induced, but even wear on the cake, at the same time secured, thus precluding any possibility of improper feeding by which automatic rotative propulsion might be resisted. Furthermore, it is to be noted by reason of the lightness of the holder structure when considered in connection with its pivotal bearing, (it being wholly supported at this point), that the resistance to the pull of the yarn from this source is rendered substantially negligible.

Referring once more toFig. I, it will be seen that the thread T, drawn from a skeiu or other. source of supply, passes about a guide bar 15, such as ordinarily found in winding machines, thence under the wax cake 11, after which it is wound upon a cone or bobbin 16, the latter being held by its own weight, in frictional contact with a driving cylinder 17. A cooperative guide finger 18, reciprocating in a well known manner in a direction longitudinally of the element 17, so directs the yarn as to build evenly uponthe cone or bobbin 16.

It will be noted 'by the adjustment, of the mounting stem 5 afforded by the provision of the set screw 6, the holder for the wax cake may be so shifted, as to slightly deflect the span of the yarn between the bar 15, and the guide finger 18, thereby placing .slight tension thereon.

In order that the yarn may be automatically guided into position between the wax cake 11, and the disk 12, of the holder, I have provided a threading attachment, comprehensively indicated at 20. Said attachment is substantially semi-circular in configuration, and formed with an inte ral boss 21, adjustably set on the stem 5. '%his element has a perimetrical ridge 22, up-

wardly inclined at one side as shown at 23,

and extending slightly beyond the main portion of the element, in the form of a terminal projection 24. When it becomes necessary, either by reason of breakage or exhaustion of one of the supply skeins, to reintroduce yarn to the waxingv device, this operation is accomplished as follows: The.

elements of the winding machine proper are first threaded in the usual manner, and the span of the yarn between the guides 15 and 18, grasped and simply laid over the top of element 20. The tension imposed by the drawing of the rotating cone 16, causes the yarn to be moved laterally toward the axis of rotation of the waxing device. In the course of such movement, the yarn'rises upon the incline 23, of the perimetrical ridge 22, and is drawn against the wax cake. As the yarn is. moved farther to the right, (considered in connection with Fig. II), under the action of the guide finger 18, it finally slips behind the projection 24, and onto the marginal space upon the upper surface of the supporting disk 12, of the holder, and ultimately finds its way beneath the wax cake thereon. From Fig. II, it is to be further noted that the ridge extension 23, thereafter becomes functional in causing a deviation of-the yarn from a straight. path so as .to engage the knurled peripheral band 14, of the holder, to efiect positive rotation of the latter.

a The element 20, is further provided with a radial ridge 25, which is inclined complementarily to the slope 23, of the perimet rical ridge 22, and functional in cooperation therewith for the purpose already explained. From Figs. II, and IV, it will be noted that the radial rldge 25, terminates in close proximity to the periphery of the disk 12, of the wax holder.

Having thus described my invention, I claim:

1. A yarn waxing device, comprising a holder freely rotatable about an inclined U axis, and adapted to sustain a cake of wax in such manner as to be held by gravity in contact with the yarn beingcoated, the inclinationof the'structure serving to modify the effect of gravitation so that only a very slight pressure is -maintained upon the yarn.

2. A yarn waxing device, including in combination, a fixed mounting stem having a" pointed terminal end; a holder for an annular wax cake freely rotatable about said yarn waxing device, including in ing housed within the extension and bored.

axially to fit over the mounting stem; and a plug set into the inner terminal of the bushing, said plug being centrally countersunk to-receive the outer end of the mounting stem, to form in cooperation therewith, a pivot bearing for the holder.

4. A yarn waxing device, including in combination, a mounting stem; a holder for an annular wax cake freely rotatable about said stem, and so disposed as to eifect engagement with the yarn at a point intermediate two guide elements between which the yarn is spanned, in the course of linear travel; and a bracket within which the mountingstem is adjustably supported, so that the holder and its charge of wax, may be adjusted with respect to the span of the yarn to slightly deflect the same and thereby effect a regulation of the working tension thereon.

5. A yarn waxing device, including in combination, a mounting stem; a holder for a wax cake freely rotatable about said stem, and comprising an annular supporting disk against which the wax cake seats, together with an axial extension bored to fit about the end of said mounting stem; means for guiding the yarn to be Waxed, over the top of the supporting disk of the holder so as to pass beneath the supported wax cake,

and, at the same time, to engage a periph eral band upon the holder extension, to ef-" fect positive rotation of the structure.

6. A yarn waxing device, including in combination, a mounting stem; a holder for 'wax cake freely rotatable about said stem,

and comprising an annular supporting disk against which the wax cake "seats, together with an axial extension bored to fit about the end of sald mounting stem; and an associated threading device in the form of a horizontally disposed element of a substantially semi-circular outline, and having a perimetrical ridge terminating, at one end, in an upward inclination, .by which the yarn, in being moved laterally under tension, is slightly raised from the normal plane of its traverse, and, during continued lateral movement, behind which it finally drops to the level of the supporting disk oi the holder, and ultimately finds its way beneath the supported wax cake.

In testimony whereof I have hereunto signed my name at Philadelphia, Pennsylvania, this 13th day of November 1919.

THOMAS CUNNINGHAM.

Witnesses:

JAMES H. BELL, E. L. FULLERTON. 

